Don't. According to official website, Jiangsu provincial government. Mathematics and applied mathematics (normal class) in the new college entrance examination do not necessarily need to choose chemistry. According to the curriculum plan for senior high schools issued by the Ministry of Education, there are many options for elective subjects of mathematics and applied mathematics (teachers), including physics, chemistry, biology, geography, history, politics and technology. Therefore, students can choose their own elective subjects according to their interests and career planning.